29. A 60-kg girl weighs herself by standing on a scale in an elevator. What does the scale read when (a) the eleva- tor is descending at a constant rate of 10 m/s, (b) the ele- vator is accelerating downward at 2 m/s², and (c) the ele- vator is ascending at 10 m/s but its speed is decreasing by 2 m/s in each second?
29. A 60-kg girl weighs herself by standing on a scale in an elevator. What does the scale read when (a) the eleva- tor is descending at a constant rate of 10 m/s, (b) the ele- vator is accelerating downward at 2 m/s², and (c) the ele- vator is ascending at 10 m/s but its speed is decreasing by 2 m/s in each second?
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Transcribed Image Text:29. A 60-kg girl weighs herself by standing on a scale in
an elevator. What does the scale read when (a) the eleva-
tor is descending at a constant rate of 10 m/s, (b) the ele-
vator is accelerating downward at 2 m/s², and (c) the ele-
vator is ascending at 10 m/s but its speed is decreasing by
2 m/s in each second?
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